An Increase in Intracellular Calcium Ion Results in Myocardial Contraction,because

question 17

Multiple Choice

An increase in intracellular calcium ion results in myocardial contraction,because calcium

• A) activates membrane calcium pumps.
• B) binds troponin, causing actin-binding sites to be exposed.
• C) increases affinity of myosin for actin cross-bridge sites.
• D) promotes ATP synthesis.

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Definitions:

Absolute Threshold

The smallest intensity of a stimulus that can be detected by an organism's sensory systems 50% of the time.

Signal Detection

A theory that aims to quantify the ability to discern between information-bearing patterns and random patterns that distract from the information.

Absolute Threshold

The absolute threshold refers to the minimum intensity of a stimulus that one can detect 50% of the time.

Difference Threshold

The minimum difference in stimulation needed to detect a change or difference between two stimuli.